| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 9 |
| Steering headbearing has excessive free play |2.2.2| | 6 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Centre Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Centre Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Front Leg shield insecure and likely to impede the steering |2.1.2e| | 1 |
| Front Footrest insecure |6.2.1a| | 1 |
| Rear Front mudguard can easily contact the wheel |2.3.7| | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motor bicycle fitted with a standard silencer in average condition |7.1.2| | 1 |
| Nearside Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Rear Direction indicator missing |1.5.1a| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Steering lock stop ineffective |2.1.3| | 1 |
| Front Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Horn not working |1.7.3a| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Registration plate issues | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Front mudguard insecure |2.3.7| | 1 |
| Steering linkage has excessive free play |2.2.2| | 1 |
| Rear Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Offside Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Decelerometer brake test the less effective brake control does not achieve an efficiency of 25%. |3.3.E1b| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Nearside Brake lever insecure |3.1.2a| | 1 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Front suspension assembly component excessively misaligned |2.3.1| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Offside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |